compose

function compose<T1, T2>(
    fn1: (arg1: T1) => T2,
): (initialValue: T1) => T2;

function compose<T1, T2, T3>(
    fn2: (arg2: T2) => T3,
    fn1: (arg1: T1) => T2,
): (initialValue: T1) => T3;

...

Returns a function that apply the result of each function to the next one in the opposite order they are defined.

INFO

Typescript does not infer the type of the function arguments as you would expect.

You have to explicit type all but the first function argument 😰.

Example

std.compose(
    value => `${value} is the result` // '5 is the result'
    (value: number) => value / 3, // 5
    (value: number) => value - 5, // 15
    (value: number) => value * 2, // 20
)(10) // '5 is the result'

compose ​

Example ​

compose

Example